TLE7469_08 Datasheet, PDF (18/21 Pages) Infineon Technologies AG – Dual Low Drop Voltage Regulator Ultra low quiescent current consumption < 55 μA

TLE 7469
Vi/V
t
VQ/V _VRT
VRO/V
T_RD
Normal operation
T_RD
t_rr
t
T_RD
Power
Fail
t_rr
t
Wnd
Ingnore Wnd ^OW
CW OW CW
OW
OW
CW
OW
t
Don’t care WDI
1. Correct Trigger
(Wrong) Trigger
WDI/V
during IW
t_WD,p
No Trigger
in OW
in CW
t
Figure 7 Window Watchdog Signal Flow
Closed window Open window
WDI
Watchdog
trigger signal
Valid
Open window Closed window
WDI
t _ECW
= Watchdog decoder sample point
Not valid
Figure 8 Window Watchdog Definitions
t _EOW
AET02952
Data Sheet
18
Rev. 1.6, 2008-01-22